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Design issue of using data binding
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monkeyking View Drop Down
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Joined: 04-Mar-2009
Location: brisbane
Posts: 68 		Post Options Post Options   Quote monkeyking Quote  Post ReplyReply Direct Link To This Post Topic: Design issue of using data binding
    Posted: 08-Jun-2009 at 7:42pm
We are facing a design problem because of using databinding. as you known, any databinding control is only be able to connect with one data source. but in our situation, the required data source must combines severial different DB tables's info, so once we use Devforce object mapper to generate the Entities, we don't know which entity should be choosen to do data binding, because they are DB tables and none of them is suitable to be the data source. so should we create our own databinding source manually? or Devforce has a solution to deal with our problem.  
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monkeyking View Drop Down
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Joined: 04-Mar-2009
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Posts: 68 		Post Options Post Options   Quote monkeyking Quote  Post ReplyReply Direct Link To This Post Posted: 08-Jun-2009 at 7:52pm
we were trying to find a function in devforce that can create our own entity as data binding source, but we can't find it. and we also tried to create a customized entity by ADO.net EF, but it seems too comlicated, because ADO.net EF doesn't have a mature feature to deal with that, all we must do is using XML to create, but if we use XML, it has some conflict with the original DB entities as they are going to share the same PK.


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kimj View Drop Down
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Joined: 09-May-2007
Posts: 1391 		Post Options Post Options   Quote kimj Quote  Post ReplyReply Direct Link To This Post Posted: 10-Jun-2009 at 7:47am
Originally posted by monkeyking

...so should we create our own databinding source manually?
Yes.  The ViewModel part of a Model-View-ViewModel should work for you. 
 
Originally posted by monkeyking

...or Devforce has a solution to deal with our problem.  
I think you've asked this question a few times, though more in line with retrieval.  DevForce does not have anything else to offer you than what's already been discussed.
 
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